Climatological trends and anticipated karst spring quantity and quality: case study of the Slovene Istria
- Permanent Link:
- Climatological trends and anticipated karst spring quantity and quality: case study of the Slovene Istria
- Series Title:
- Geological Society, London, Special Publications
- Ravbar, NataÅ¡a
- Publication Date:
- serial ( sobekcm )
- The behaviour of aquifers with karst porosity is dependent on hydrological conditions. This is due to the peculiar characteristics of the groundwater flow and dynamics of hydrological processes in karst. As a result, karst aquifers are especially vulnerable to the effects of environmental change. We assessed the long-term climatological and hydrological trends and the short-term effects of increasingly frequent extreme hydrological events (droughts) for the Mediterranean karst spring RiÅ¾ana in SW Slovenia. The findings predict higher mean annual air temperatures of 0.34°C decadeâˆ’1, lower annual precipitation of c. 60 mm decadeâˆ’1 and higher annual actual evapotranspiration (especially during spring and summer) of 32â€“49 mm decadeâˆ’1. As a consequence, we can expect a decrease in the mean annual discharge of the spring of c. 480 l sâˆ’1 decadeâˆ’1 with prolonged dry summer periods. Detailed monitoring of the physical, chemical and microbiological parameters showed that the flood pulses caused by precipitation events after a long dry period cause a significant deterioration in water quality. In such situations, contaminants stored in the unsaturated zone are flushed out and counts of coliform bacteria can reach >1400 cfu (100 ml)âˆ’1, with total Al and Fe concentrations up to 206 and 474 Î¼g lâˆ’1, respectively. These results suggest that there should be urgent adherence to water quality standards to protect karst water sources in view of the anticipated climatological stresses. Management strategies should promote monitoring and the rational use of karst water supplies.
- Original Version:
- Geological Society, London, Special Publications, Vol. 466 (2017-12-06).
- Source Institution:
- University of South Florida Library
- Holding Location:
- University of South Florida
- Rights Management:
- This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.
No images or PDF downloads are available for this resource.
Cras ut cursus ante, a fringilla nunc. Mauris lorem nunc, cursus sit amet enim ac, vehicula vestibulum mi. Mauris viverra nisl vel enim faucibus porta. Praesent sit amet ornare diam, non finibus nulla.
Cras efficitur magna et sapien varius, luctus ullamcorper dolor convallis. Orci varius natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Fusce sit amet justo ut erat laoreet congue sed a ante.
Phasellus ornare in augue eu imperdiet. Donec malesuada sapien ante, at vehicula orci tempor molestie. Proin vitae urna elit. Pellentesque vitae nisi et diam euismod malesuada aliquet non erat.
Nunc fringilla dolor ut dictum placerat. Proin ac neque rutrum, consectetur ligula id, laoreet ligula. Nulla lorem massa, consectetur vitae consequat in, lobortis at dolor. Nunc sed leo odio.